Upper gastrointestinal hemorrhage associated with pancreatitis.

In a two-year period from June 1981, two cases of acute upper gastrointestinal bleeding caused by pancreatitis were observed. In both cases the bleeding was caused by erosion of the gastric mucosa contiguous to, respectively, a pseudocyst and an abscess of the pancreas. Both patients were successfully treated with cystogastrostomy. Erosive bleeding from gastrointestinal mucosa adjoining pancreatic lesions may be a more common source of upper gastrointestinal bleeding than has hitherto been assumed.